1: Hope and Crosby going up and down (7)
3: Smells clinch it, oddly, for eavesdroppers? (7)
7: Romantic poet is close to Reagan (5)
9: No stove can allegedly help to make a drink (9)
10: Chain some; cuff objectors (3)
11: Later round without an opponent (3)
12: Hates and gets rid of a Mensa entry requirement? (7)
13: Privy to accessibility (11)
14: Essential part of Cayce's power! (3)
16: Small piece of fish (3)
18: Stimulant produced as choir paid off (11)
21: Gloomy pizza maker taking day off around middle of January (7)
22: Get into the archeology scene. (3)
23: Looks like an eyesore, sounds like an eyesore (3)
24: Disillusioned with the tune not being broadcast (3,3,3)
25: Robe's eyelet exposes more than fat (5)
26: Finished holding second half of tour; it's lasted (7)
27: Water ceremony or fire in a crisis (7)